1.
Mayim Bialik

2.
Jim Parsons

“Knock, knock, knock, thank you… Thank you, apartment 4A, for being a home to so many dreams come true, to so many friendships made," Parsons captioned the above photo on Instagram.

"And thank YOU, ALL of you — yes, YOU, reading this right NOW! As we get ready to tape our final episode tonight, to walk in and out of this apartment door for the last time, it is hard to find the words to articulate what a profound experience this has been."

"But the words ‘love’ and ‘gratitude’ come to mind… so love and gratitude to all of you. ALL of you… ”

3.
Johnny Galecki

“More feelings than words can express,” Galecki shared of his own character's apartment.

4.
Kevin Sussman

“Gonna miss napping next to @missmayim," Sussman shared.

"We nap in adjacent dressing rooms, so we simulated what that would look like if you removed the wall."

"Did I mention that Mayim’s room is also where I’ve had some of my most productive psychotherapy sessions? Thank you Dr. Bialik. ❤️”

5.
Kevin Sussman and Melissa Rauch

“The friends you make along the way… One of the best things about showing up to Stage 25 all these years has been seeing @themelissarauch’s smiling face,” Sussman said of the above photo.

Melissa Rauch said the following:

“While Stuart may have taken up residence in the Wolowitz household @kevsussmantook up residence in a special place in my heart.”

6.
Sussman on working with Kaley Cuoco

“Do @kaleycuoco and I look like we’re keeping it together?," Sussman wondered in the caption for the above photo.

"Took this right before our final speed read. Before our final taping. Before my final emotional breakdown."

"Gonna miss working with Kaley so much. Sometimes you get to work with an actor that’s so thoroughly in the moment that you can look to them at any time to ground you – Kaley has been that for me for eleven years. ❤️”